Trolley for electrical railways



.(No Model.) n. AINSLI'E. T'ROLLEY FOR ELECTRICAL RAILWAYS.

No..-4oo,724. Patented-M1122, 1889'. v

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WITNESSES: I INVENTORQ.

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UNITED STATES PATENT Eric's,

DAVID ALLEN AINSLIE, or RICHMOND, vrnenvm.

TROLLEY FOR ELECTRICAL RAILWAYS.

SPECIFICATION forming part of Letters-Patent No. 400,724, dated April 2,1889.

Application filed AprillZ, 1888. SerialNo. 270,429. mamas.)

To all whom it may concern.-

Be it known that I, DAVID ALLEN AINsLIE, a citizen of the United States,residing at Richmond, in the county of Henrico and State of Virginia,have invented certain new and useful Improvements in Trolleys forElectrical Railways, of which the following is a specification.

My invent-ion relates to a device for use on cars equipped with anelectric motor, and is designed to make connection with the elevatedwire on which the electric current runs. The device is termed a trolley.

The accompanying drawings illustrate the invention.

Figure 1 is a side view of the device and its support as it appears onthe roof of the motor-car. Fig. 2 is a side view as seen in a transversedirection from that shown in Fig. 1. Fig. 3 is a horizontal section onthe line 3 3.

The trolley consists of a brass cylinder, A, having journaled ends 1),which fit in bearings on two brass arms, B, which are attached to anupright staif or bar, 0. Practically the said two arms B are merebifurcations at the upper end of the said staff. The trolley-cylinderhas a central groove, d, around it which comes in contact with andreceives the overhead wire, (not shown,) along which the electriccurrent runs.

A leading object of the invention is to so construct and mount thetrolley-staff O as to afford it swinging movement in all directions andto provide for its self-adj ustment, to the end that while the cylinderA will be maintained in a horizontal position, and thereby keep contactwith the overhead Wire, it will not hang or catch or break the saidwire.

The staff 0 is made in'two sections-the lower one, a, and the upper one,a. The lower one is pivoted at e, and above the said pivot the twosections are united by a joint section of the staff. Two such springsare here shown, one being at one side and the other at the oppositeside. By this means the top section, a, carrying the cylinder, may yieldat the joint or hinge l.

The trolley-staff has a pivot-bolt, e, and is pivoted within a metalring or collar, f,which has pivots g at diametrically-opposite pointswhich are on a line at right angles with the pivot-bolt a, The ring f ismounted in the present instance in a supporting-ring, H, which is fixedat the upper end of standard I. It will be seen that this constructionfor mounting the staff. 0 is a gimbal-joint, which provides forapivoting movement in all directions. The bottom of the trolley-staffhas a weight, 76, which serves to maintain the trolley in its normalposition, while the gimbaljoint affords the desired movement. Areadily-yielding spring, q, connects the lower end of the staff or theweight with the top 1' of the car. While the spring q will aid inretaining the stafi O in the normal upright position, it will yieldreadily to allow the staff to be tilted on the gimbatjoint. Thetrolley-cylinder A and supporting-arm B are kept in electricconnectionwith the motor on the car by a Wire, 5, attached to the said arms, andfrom thence passing through an eye or guide, 25, to the motor on thecar.

From the foregoing the operation of the device will be readilyunderstood.

Having described my invention, I claim 1. A trolley for electric-motorcars, comprising the combination of a standard, I, provided at its topwith a gimbal-ring, a staff mounted on a pivot in said gimbal-ring with1 its lower end free, so as to have a swinging movement in alldirections, and a cylinder on the upper end of the staff.

lower section, a spring at the said joint or hinge to retain the topsection upright, and a cylinder on the upper end of the top section.

4. A trolley for electric-motor cars, comprising the combination of astaif made in two sections which are united by a springjoint, agimbal-ring supporting the said staif, and a cylinder on the upper endof the top section.

5. A trolley for electric-motor cars, comprising the combination of agimbal-riug, a staff mounted on a pivot in said gimbal, so as to have aswinging movement in all directions, a cylinder on the upper end of thestaff, and a weight attached to the bottom of the stafi.

DAVID ALLEN AINSLIE.

Witnesses:

F. A. HUNDLEY, Ro. H. GILLIAM.

